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+<template>
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+ <div>
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+ <van-uploader
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+ multiple
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+ :accept="fileType.toString()"
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+ :max-count="limit"
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+ :max-size="fileSize * 1024 * 1024"
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+ @oversize="onOversize"
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+ :before-read="beforeRead"
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+ :after-read="afterRead">
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+ <van-button icon="plus" type="primary" class="button">上传文件</van-button>
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+ </van-uploader>
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+ <div v-if="isShowTip" class="upload-tip">
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+ <div v-if="fileType">1、支持{{ fileType.join('、') }}文件</div>
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+ <div v-if="limit">2、最多支持上传{{limit}}个文件</div>
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+ </div>
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+ <!-- 文件列表 -->
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+ <transition-group class="upload-file-list" name="el-fade-in-linear" tag="ul">
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+ <li v-for="(file, index) in fileList" :key="file.uid" class="upload-list-item">
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+ <div class="text-primary" @click="handleDownload(file)">
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+ {{ getFileName(file.name) }}
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+ </div>
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+ <van-icon name="delete-o" class="delete-icon" @click="handleDelete(index)"/>
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+ </li>
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+ </transition-group>
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+ </div>
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+</template>
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+
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+<script lang="ts" setup name="FileUpload">
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+import {showFailToast, showToast} from "vant";
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+import {ref} from "vue";
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+import { v1 as uuidv1 } from 'uuid';
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+import {download2, globalHeaders} from "@/utils/request";
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+import axios from "axios";
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+
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+const props = defineProps({
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+ modelValue: {
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+ type: [String, Object, Array],
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+ default: () => []
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+ },
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+ buttonText: {
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+ type: String,
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+ default: '选取文件'
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+ },
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+ // 数量限制
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+ limit: {
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+ type: Number,
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+ default: 5
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+ },
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+ // 大小限制(MB)
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+ fileSize: {
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+ type: Number,
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+ default: 100
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+ },
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+ // 文件类型, 例如['png', 'jpg', 'jpeg']
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+ fileType: {
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+ type: Array,
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+ default: ['doc', 'docx', 'xls', 'xlsx', 'ppt', 'pptx', 'txt', 'pdf']
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+ },
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+ // 是否显示提示
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+ isShowTip: {
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+ type: Boolean,
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+ default: true
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+ }
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+});
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+
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+const emit = defineEmits(['update:modelValue']);
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+const number = ref(0);
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+const uploadList = ref<any[]>([]);
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+
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+const baseUrl = import.meta.env.VITE_BASE_API;
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+const downLoadApi = import.meta.env.VITE_BASE_DOWNLOAD_API;
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+const uploadFileUrl = ref(baseUrl + '/resource/oss/upload'); // 上传文件服务器地址
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+const headers = ref(globalHeaders());
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+
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+const fileList = ref<any[]>([]);
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+
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+const onOversize = () => {
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+ showToast('文件大小不能超过' + props.fileSize + 'MB');
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+};
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+// 上传前置处理
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+const beforeRead = (file: any) => {
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+ // 校检文件类型
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+ if (props.fileType.length) {
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+ const fileName = file.name.split('.');
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+ const fileExt = fileName[fileName.length - 1];
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+ const isTypeOk = props.fileType.indexOf(fileExt) >= 0;
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+ if (!isTypeOk) {
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+ showToast(`文件格式不正确, 请上传${props.fileType.join('/')}格式文件!`);
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+ return false;
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+ }
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+ }
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+ // 校检文件大小
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+ if (props.fileSize) {
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+ const isLt = file.size / 1024 / 1024 < props.fileSize;
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+ if (!isLt) {
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+ showToast(`上传文件大小不能超过 ${props.fileSize} MB!`);
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+ return false;
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+ }
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+ }
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+ number.value++;
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+ return true;
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+};
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+
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+// 上传
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+const afterRead = async (file: any) => {
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+ let url = baseUrl + '/file/upload/uploadfile'; //上传文件接口
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+ try {
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+ // 如果文件大于等于5MB,分片上传
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+ const res = await uploadByPieces(url, file);
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+ // 分片上传后操作
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+ if (res.code === 200) {
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+ uploadList.value.push({
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+ name: res.originalName,
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+ url: res.filename
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+ });
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+ uploadedSuccessfully();
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+ } else {
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+ number.value--;
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+ showFailToast(res.msg)
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+ // fileUploadRef.value?.handleRemove(file);
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+ uploadedSuccessfully();
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+ }
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+ } catch (e) {
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+ return e;
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+ }
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+};
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+//分片上传
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+const uploadByPieces = async (url, { file }) => {
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+ // 上传过程中用到的变量
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+ const chunkSize = 5 * 1024 * 1024; // 5MB一片
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+ const chunkCount = Math.ceil(file.size / chunkSize); // 总片数
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+ // 获取当前chunk数据
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+ const identifier = uuidv1();
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+ const getChunkInfo = (file, index) => {
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+ let start = index * chunkSize;
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+ let end = Math.min(file.size, start + chunkSize);
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+ let chunknumber = file.slice(start, end);
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+ const fileName = file.name;
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+ return { chunknumber, fileName };
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+ };
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+ // 分片上传接口
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+ const uploadChunk = (data, params) => {
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+ return new Promise((resolve, reject) => {
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+ axios({
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+ url,
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+ method: 'post',
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+ data,
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+ params,
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+ headers: {
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+ 'Content-Type': 'multipart/form-data'
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+ }
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+ })
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+ .then((res) => {
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+ return resolve(res.data);
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+ })
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+ .catch((err) => {
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+ return reject(err);
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+ });
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+ });
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+ };
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+ // 针对单个文件进行chunk上传
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+ const readChunk = (index) => {
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+ const { chunknumber } = getChunkInfo(file, index);
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+ let fetchForm = new FormData();
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+ fetchForm.append('file', chunknumber);
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+ return uploadChunk(fetchForm, {
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+ chunknumber: index,
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+ identifier: identifier
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+ });
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+ };
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+ // 针对每个文件进行chunk处理
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+ const promiseList = [];
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+ try {
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+ for (let index = 0; index < chunkCount; ++index) {
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+ promiseList.push(readChunk(index));
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+ }
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+ await Promise.all(promiseList);
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+ // 文件分片上传完成后,调用合并接口
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+ const res = await mergeChunks(identifier, file.name);
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+ res.originalName = file.name;
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+ return res;
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+ } catch (e) {
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+ return e;
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+ }
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+};
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+const mergeChunks = async (identifier: string, filename: string) => {
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+ try {
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+ const response = await axios.post(baseUrl + '/file/upload/mergefile', null, {
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+ params: {
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+ identifier: identifier,
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+ filename: filename,
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+ chunkstar: 0 // 假设所有分片的开始序号为0
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+ }
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+ });
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+
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+ return response.data;
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+ } catch (error) {
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+ throw new Error('合并请求失败');
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+ }
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+};
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+// 上传结束处理
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+const uploadedSuccessfully = () => {
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+ if (number.value > 0 && uploadList.value.length === number.value) {
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+ fileList.value = fileList.value.filter((f) => f.url !== undefined).concat(uploadList.value);
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+ uploadList.value = [];
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+ number.value = 0;
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+ emit('update:modelValue', fileList.value);
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+ }
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+};
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+// 删除文件
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+const handleDelete = (index: number) => {
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+ fileList.value.splice(index, 1);
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+ emit('update:modelValue', fileList.value);
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+};
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+// 获取文件名称
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+const getFileName = (name: string) => {
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+ // 如果是url那么取最后的名字 如果不是直接返回
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+ if (name.lastIndexOf('/') > -1) {
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+ return name.slice(name.lastIndexOf('/') + 1);
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+ } else {
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+ return name;
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+ }
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+};
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+
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+// 下载方法
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+const handleDownload = (file: any) => {
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+ download2(baseUrl + downLoadApi + file.url, file.name);
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+};
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+</script>
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+
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+<style lang="scss" scoped>
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+.button {
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+ padding: 0 10px;
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+ height: 26px;
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+ background: #2C81FF;
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+ border-radius: 2px;
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+ margin-bottom: 6px;
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+}
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+.upload-tip {
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+ font-size: 14px;
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+}
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+.upload-file-list {
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+ .upload-list-item {
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+ display: flex;
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+ align-items: center;
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+ .text-primary {
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+ color: #2c81ff;
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+ font-size: 14px;
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+ }
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+ .delete-icon {
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+ color: #969799;
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+ font-size: 20px;
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+ margin-left: 5px;
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+ }
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+ }
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+}
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+</style>
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